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In the track shown in figure -3.94 secti...

In the track shown in figure -3.94 section AB is a quadant of a circle of 1 metre radius in vertical plane. A block is released at A and slides without friction until it reaches at B. After B it moves on a rough horizontal floor and comes to rest at D, 3 metres from B the coefficient of friction between floor and the body will be :

A

`1//3`

B

`2//3`

C

`1//4`

D

`3//8`

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